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* Versions.def: Add libanl definition.
	* shlig-versions: Add entry for libanl.
	* resolv/Makefile (distribute): Add gai_misc.h and ga_test.c.
	(routines): Add gai_sigqueue.
	(extra-libs): Add libanl.
	(libanl-routines): New variable.
	Add rules to build libanl and ga_test.
	* resolv/Versions [libc] (GLIBC_2.2.3): Add __gai_sigqueue.
	[libanl]: New library.
	* resolv/netdb.h: Add definitions for libanl.
	* resolv/getaddrinfo_a.c: New file.
	* resolv/gai_cancel.c: New file.
	* resolv/gai_error.c: New file.
	* resolv/gai_misc.c: New file.
	* resolv/gai_misc.h: New file.
	* resolv/gai_notify.c: New file.
	* resolv/gai_suspend.c: New file.
	* resolv/ga_test.c: New file.
	* sysdeps/generic/gai_sigqueue.c: New file.
	* sysdeps/unix/sysv/linux/gai_sigqueue.c: New file.
	* sysdeps/generic/bits/siginfo.h: Allow __need_sigevent_t being defined
	and provide only that definition.
	* sysdeps/unix/sysv/linux/alpha/bits/siginfo.h: Likewise.
	* sysdeps/unix/sysv/linux/bits/siginfo.h: Likewise.
	* sysdeps/unix/sysv/linux/ia64/bits/siginfo.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/bits/siginfo.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/bits/siginfo.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/bits/siginfo.h: Likewise.

	* rt/aio_misc.c: Fix typos in comments.
	* rt/lio_listio.c: Pretty printing.  Little optimization in request
	list handling.

	* elf/rtld.c: Remove commented out code.
This commit is contained in:
Ulrich Drepper 2001-03-03 18:21:04 +00:00
parent 28b20578c9
commit 2ace572170
28 changed files with 1465 additions and 71 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
ChangeLog
View File

@ -1,5 +1,40 @@
2001-03-03 Ulrich Drepper <drepper@redhat.com>
* Versions.def: Add libanl definition.
* shlig-versions: Add entry for libanl.
* resolv/Makefile (distribute): Add gai_misc.h and ga_test.c.
(routines): Add gai_sigqueue.
(extra-libs): Add libanl.
(libanl-routines): New variable.
Add rules to build libanl and ga_test.
* resolv/Versions [libc] (GLIBC_2.2.3): Add __gai_sigqueue.
[libanl]: New library.
* resolv/netdb.h: Add definitions for libanl.
* resolv/getaddrinfo_a.c: New file.
* resolv/gai_cancel.c: New file.
* resolv/gai_error.c: New file.
* resolv/gai_misc.c: New file.
* resolv/gai_misc.h: New file.
* resolv/gai_notify.c: New file.
* resolv/gai_suspend.c: New file.
* resolv/ga_test.c: New file.
* sysdeps/generic/gai_sigqueue.c: New file.
* sysdeps/unix/sysv/linux/gai_sigqueue.c: New file.
* sysdeps/generic/bits/siginfo.h: Allow __need_sigevent_t being defined
and provide only that definition.
* sysdeps/unix/sysv/linux/alpha/bits/siginfo.h: Likewise.
* sysdeps/unix/sysv/linux/bits/siginfo.h: Likewise.
* sysdeps/unix/sysv/linux/ia64/bits/siginfo.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/siginfo.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/siginfo.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/sparc64/bits/siginfo.h: Likewise.
* rt/aio_misc.c: Fix typos in comments.
* rt/lio_listio.c: Pretty printing. Little optimization in request
list handling.
* elf/rtld.c: Remove commented out code.
* sysdeps/unix/sysv/linux/linux_fsinfo.h (SHMFS_SUPER_MAGIC):
Update for real 2.4 kernels.

12
NEWS
View File

@ -1,4 +1,4 @@
GNU C Library NEWS -- history of user-visible changes. 2001-2-9
GNU C Library NEWS -- history of user-visible changes. 2001-3-3
Copyright (C) 1992-1999, 2000, 2001 Free Software Foundation, Inc.
See the end for copying conditions.
@ -7,6 +7,16 @@ Please send GNU C library bug reports using the `glibcbug' script to
<bugs@gnu.org>. Questions and suggestions should be send to
<bug-glibc@gnu.org>.
Version 2.2.3
* Intel's IA-64 math library is large integrated. It provides fast and
accurate implementatations for most basic and standard math functions
in float, double, and long double format.
* An asynchronous name lookup library was added. The interface is designed
after POSIX AIO. The proposal was circulated beforehand to get comments.
No negative ones came in. Implemented by Ulrich Drepper.
Version 2.2.2
* Lots of headers were cleaned up. Using the tool in the conform/ subdir

3
Versions.def
View File

@ -95,3 +95,6 @@ ld {
libthread_db {
GLIBC_2.1.3
}
libanl {
GLIBC_2.2.3
}

20
bits/siginfo.h
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@ -1,5 +1,5 @@
/* siginfo_t, sigevent and constants. Stub version.
Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
Copyright (C) 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -17,13 +17,15 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#if !defined _SIGNAL_H && !defined __need_siginfo_t
#if !defined _SIGNAL_H && !defined __need_siginfo_t \
&& !defined __need_sigevent_t
# error "Never include this file directly. Use <signal.h> instead"
#endif
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
#if (!defined __have_sigval_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t \
|| defined __need_sigevent_t))
# define __have_sigval_t 1
/* Type for data associated with a signal. */
typedef union sigval
@ -31,6 +33,11 @@ typedef union sigval
int sival_int;
void *sival_ptr;
} sigval_t;
#endif
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
typedef struct siginfo
{
@ -173,7 +180,8 @@ enum
#endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
#if defined _SIGNAL_H && !defined __have_sigevent_t
#if (defined _SIGNAL_H || defined __need_sigevent_t) \
&& !defined __have_sigevent_t
# define __have_sigevent_t 1
/* Structure to transport application-defined values with signals. */

3
elf/rtld.c
View File

@ -251,8 +251,7 @@ _dl_start_final (void *arg, struct link_map *bootstrap_map_p,
}
#endif
if (//__builtin_expect (_dl_debug_statistics, 0))
__builtin_expect (_dl_debug_mask & DL_DEBUG_STATISTICS, 0))
if (__builtin_expect (_dl_debug_mask & DL_DEBUG_STATISTICS, 0))
print_statistics ();
return *start_addr;

20
resolv/Makefile
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@ -1,4 +1,4 @@
# Copyright (C) 1994,95,96,97,98,99,2000 Free Software Foundation, Inc.
# Copyright (C) 1994,95,96,97,98,99,2000,2001 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
@ -26,16 +26,16 @@ headers := resolv.h \
arpa/nameser.h arpa/nameser_compat.h \
sys/bitypes.h
distribute := ../conf/portability.h mapv4v6addr.h mapv4v6hostent.h \
Banner res_hconf.h res_debug.h README
Banner res_hconf.h res_debug.h README gai_misc.h ga_test.c
routines := herror inet_addr inet_ntop inet_pton nsap_addr res_init \
res_hconf res_libc
res_hconf res_libc gai_sigqueue
tests = tst-aton
include ../Makeconfig
extra-libs := libresolv libnss_dns
extra-libs := libresolv libanl libnss_dns
extra-libs-others = $(extra-libs)
libresolv-routines := gethnamaddr res_comp res_debug \
res_data res_mkquery res_query res_send \
@ -43,6 +43,9 @@ libresolv-routines := gethnamaddr res_comp res_debug \
ns_parse ns_name ns_netint ns_ttl ns_print \
ns_samedomain
libanl-routines := gai_cancel gai_error gai_misc gai_notify gai_suspend \
getaddrinfo_a
subdir-dirs = nss_dns
vpath %.c nss_dns
@ -51,6 +54,10 @@ ifneq ($(build-static-nss),yes)
libnss_dns-inhibit-o = $(filter-out .os,$(object-suffixes))
endif
ifeq (yes,$(build-shared))
tests: $(objpfx)ga_test
endif
include ../Rules
CPPFLAGS += -Dgethostbyname=res_gethostbyname \
@ -69,3 +76,8 @@ $(objpfx)libresolv.so: $(common-objpfx)libc.so
# The DNS NSS modules needs the resolver.
$(objpfx)libnss_dns.so: $(objpfx)libresolv.so $(common-objpfx)libc.so
# The asynchronous name lookup code needs the thread library.
$(objpfx)libanl.so: $(common-objpfx)libc.so $(shared-thread-library)
$(objpfx)ga_test: $(objpfx)libanl.so $(shared-thread-library)

9
resolv/Versions
View File

@ -22,6 +22,9 @@ libc {
# r*
__res_state; __res_init; __res_nclose; __res_ninit; _res_hconf;
}
GLIBC_2.2.3 {
__gai_sigqueue;
}
}
libresolv {
@ -66,3 +69,9 @@ libnss_dns {
_nss_dns_getnetbyname_r;
}
}
libanl {
GLIBC_2.2.3 {
getaddrinfo_a; gai_cancel; gai_error; gai_suspend;
}
}

99
resolv/ga_test.c Normal file
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@ -0,0 +1,99 @@
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netdb.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
int
main (void)
{
#define N 10
struct gaicb reqmem[N];
struct gaicb *req[N];
int n;
for (n = 0; n < N; ++n)
{
asprintf (&reqmem[n].ar_name, "test%d.test.redhat.com", 140 + n);
reqmem[n].ar_service = NULL;
reqmem[n].ar_request = NULL;
reqmem[n].ar_result = NULL;
req[n] = &reqmem[n];
}
if (getaddrinfo_a (GAI_NOWAIT, req, N, NULL) != 0)
{
puts ("queue call failed");
exit (1);
}
else
puts ("queue call successful");
while (1)
{
int any = 0;
for (n = 0; n < N; ++n)
if (req[n] != NULL && gai_error (req[n]) != EAI_INPROGRESS)
{
if (gai_error (req[n]) == 0)
{
struct addrinfo *runp = req[n]->ar_result;
while (runp != NULL)
{
switch (runp->ai_family)
{
case PF_INET:
{
struct sockaddr_in *sinp;
sinp = (struct sockaddr_in *) runp->ai_addr;
printf ("%2d: %s = %s\n", n,
req[n]->ar_name, inet_ntoa (sinp->sin_addr));
}
break;
default:
printf ("%2d: family %d\n", n, runp->ai_family);
break;
}
runp = runp->ai_next;
}
}
else
printf ("error for %d: %s\n", n,
gai_strerror (gai_error (req[n])));
req[n] = NULL;
break;
}
else if (req[n] != NULL)
any = 1;
if (n == N)
{
if (any)
gai_suspend (req, N, NULL);
else
break;
}
}
__libc_write(1,"got all\n", 8);
for (n = 0; n < N; ++n)
if (gai_error (&reqmem[n]) == 0)
{
struct addrinfo *runp = reqmem[n].ar_result;
while (runp != NULL)
{
struct addrinfo *oldp = runp;
runp = runp->ai_next;
freeaddrinfo (oldp);
}
}
return 0;
}

48
resolv/gai_cancel.c Normal file
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@ -0,0 +1,48 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <netdb.h>
#include <pthread.h>
#include "gai_misc.h"
int
gai_cancel (struct gaicb *gaicbp)
{
int result = 0;
int status;
/* Request the mutex. */
pthread_mutex_lock (&__gai_requests_mutex);
/* Find the request among those queued but not yet running. */
status = __gai_remove_request (gaicbp);
if (status == 0)
result = EAI_CANCELED;
else if (status > 0)
result = EAI_NOTCANCELED;
else
result = EAI_ALLDONE;
/* Release the mutex. */
pthread_mutex_unlock (&__gai_requests_mutex);
return result;
}

28
resolv/gai_error.c Normal file
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@ -0,0 +1,28 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <netdb.h>
#include "gai_misc.h"
int
gai_error (struct gaicb *req)
{
return req->__return;
}

423
resolv/gai_misc.c Normal file
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@ -0,0 +1,423 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <assert.h>
#include <errno.h>
#include <pthread.h>
#include <stdlib.h>
#include <sys/time.h>
#include "gai_misc.h"
/* Pool of request list entries. */
static struct requestlist **pool;
/* Number of total and allocated pool entries. */
static size_t pool_max_size;
static size_t pool_size;
/* We implement a two dimensional array but allocate each row separately.
The macro below determines how many entries should be used per row.
It should better be a power of two. */
#define ENTRIES_PER_ROW 32
/* How many rows we allocate at once. */
#define ROWS_STEP 8
/* List of available entries. */
static struct requestlist *freelist;
/* Structure list of all currently processed requests. */
static struct requestlist *requests;
static struct requestlist *requests_tail;
/* Number of threads currently running. */
static int nthreads;
/* Number of threads waiting for work to arrive. */
static int idle_thread_count;
/* These are the values used for optimization. We will probably
create a funcion to set these values. */
static struct gaiinit optim =
{
20, /* int gai_threads; Maximal number of threads. */
64, /* int gai_num; Number of expected simultanious requests. */
0,
0,
0,
0,
1,
0
};
/* Since the list is global we need a mutex protecting it. */
pthread_mutex_t __gai_requests_mutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
/* When you add a request to the list and there are idle threads present,
you signal this condition variable. When a thread finishes work, it waits
on this condition variable for a time before it actually exits. */
pthread_cond_t __gai_new_request_notification = PTHREAD_COND_INITIALIZER;
/* Functions to handle request list pool. */
static struct requestlist *
get_elem (void)
{
struct requestlist *result;
if (freelist == NULL)
{
struct requestlist *new_row;
int cnt;
if (pool_size + 1 >= pool_max_size)
{
size_t new_max_size = pool_max_size + ROWS_STEP;
struct requestlist **new_tab;
new_tab = (struct requestlist **)
realloc (pool, new_max_size * sizeof (struct requestlist *));
if (new_tab == NULL)
return NULL;
pool_max_size = new_max_size;
pool = new_tab;
}
/* Allocate the new row. */
cnt = pool_size == 0 ? optim.gai_num : ENTRIES_PER_ROW;
new_row = (struct requestlist *) calloc (cnt,
sizeof (struct requestlist));
if (new_row == NULL)
return NULL;
pool[pool_size++] = new_row;
/* Put all the new entries in the freelist. */
do
{
new_row->next = freelist;
freelist = new_row++;
}
while (--cnt > 0);
}
result = freelist;
freelist = freelist->next;
return result;
}
struct requestlist *
internal_function
__gai_find_request (const struct gaicb *gaicbp)
{
struct requestlist *runp;
runp = requests;
while (runp != NULL)
if (runp->gaicbp == gaicbp)
return runp;
else
runp = runp->next;
return NULL;
}
int
internal_function
__gai_remove_request (struct gaicb *gaicbp)
{
struct requestlist *runp;
struct requestlist *lastp;
runp = requests;
lastp = NULL;
while (runp != NULL)
if (runp->gaicbp == gaicbp)
break;
else
{
lastp = runp;
runp = runp->next;
}
if (runp == NULL)
/* Not known. */
return -1;
if (runp->running != 0)
/* Currently handled. */
return 1;
/* Dequeue the request. */
if (lastp == NULL)
requests = runp->next;
else
lastp->next = runp->next;
if (runp == requests_tail)
requests_tail = lastp;
return 0;
}
/* The thread handler. */
static void *handle_requests (void *arg);
/* The main function of the async I/O handling. It enqueues requests
and if necessary starts and handles threads. */
struct requestlist *
internal_function
__gai_enqueue_request (struct gaicb *gaicbp)
{
struct requestlist *newp;
struct requestlist *lastp;
/* Get the mutex. */
pthread_mutex_lock (&__gai_requests_mutex);
/* Get a new element for the waiting list. */
newp = get_elem ();
if (newp == NULL)
{
pthread_mutex_unlock (&__gai_requests_mutex);
__set_errno (EAGAIN);
return NULL;
}
newp->running = 0;
newp->gaicbp = gaicbp;
newp->waiting = NULL;
newp->next = NULL;
lastp = requests_tail;
if (requests_tail == NULL)
requests = requests_tail = newp;
else
{
requests_tail->next = newp;
requests_tail = newp;
}
gaicbp->__return = EAI_INPROGRESS;
/* See if we need to and are able to create a thread. */
if (nthreads < optim.gai_threads && idle_thread_count == 0)
{
pthread_t thid;
pthread_attr_t attr;
newp->running = 1;
/* Make sure the thread is created detached. */
pthread_attr_init (&attr);
pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
/* Now try to start a thread. */
if (pthread_create (&thid, &attr, handle_requests, newp) == 0)
/* We managed to enqueue the request. All errors which can
happen now can be recognized by calls to `gai_error'. */
++nthreads;
else
{
if (nthreads == 0)
{
/* We cannot create a thread in the moment and there is
also no thread running. This is a problem. `errno' is
set to EAGAIN if this is only a temporary problem. */
assert (lastp->next == newp);
lastp->next = NULL;
requests_tail = lastp;
newp->next = freelist;
freelist = newp;
newp = NULL;
}
else
/* We are not handling the request after all. */
newp->running = 0;
}
}
/* Enqueue the request in the request queue. */
if (newp != NULL)
{
/* If there is a thread waiting for work, then let it know that we
have just given it something to do. */
if (idle_thread_count > 0)
pthread_cond_signal (&__gai_new_request_notification);
}
/* Release the mutex. */
pthread_mutex_unlock (&__gai_requests_mutex);
return newp;
}
static void *
handle_requests (void *arg)
{
struct requestlist *runp = (struct requestlist *) arg;
do
{
/* If runp is NULL, then we were created to service the work queue
in general, not to handle any particular request. In that case we
skip the "do work" stuff on the first pass, and go directly to the
"get work off the work queue" part of this loop, which is near the
end. */
if (runp == NULL)
pthread_mutex_lock (&__gai_requests_mutex);
else
{
/* Make the request. */
struct gaicb *req = runp->gaicbp;
struct requestlist *srchp;
struct requestlist *lastp;
req->__return = getaddrinfo (req->ar_name, req->ar_service,
req->ar_request, &req->ar_result);
/* Get the mutex. */
pthread_mutex_lock (&__gai_requests_mutex);
/* Send the signal to notify about finished processing of the
request. */
__gai_notify (runp);
/* Now dequeue the current request. */
lastp = NULL;
srchp = requests;
while (srchp != runp)
{
lastp = srchp;
srchp = srchp->next;
}
assert (runp->running == 1);
if (requests_tail == runp)
requests_tail = lastp;
if (lastp == NULL)
requests = requests->next;
else
lastp->next = runp->next;
/* Free the old element. */
runp->next = freelist;
freelist = runp;
}
runp = requests;
while (runp != NULL && runp->running != 0)
runp = runp->next;
/* If the runlist is empty, then we sleep for a while, waiting for
something to arrive in it. */
if (runp == NULL && optim.gai_idle_time >= 0)
{
struct timeval now;
struct timespec wakeup_time;
++idle_thread_count;
gettimeofday (&now, NULL);
wakeup_time.tv_sec = now.tv_sec + optim.gai_idle_time;
wakeup_time.tv_nsec = now.tv_usec * 1000;
if (wakeup_time.tv_nsec > 1000000000)
{
wakeup_time.tv_nsec -= 1000000000;
++wakeup_time.tv_sec;
}
pthread_cond_timedwait (&__gai_new_request_notification,
&__gai_requests_mutex, &wakeup_time);
--idle_thread_count;
runp = requests;
while (runp != NULL && runp->running != 0)
runp = runp->next;
}
if (runp == NULL)
--nthreads;
else
{
/* Mark the request as being worked on. */
assert (runp->running == 0);
runp->running = 1;
/* If we have a request to process, and there's still another in
the run list, then we need to either wake up or create a new
thread to service the request that is still in the run list. */
if (requests != NULL)
{
/* There are at least two items in the work queue to work on.
If there are other idle threads, then we should wake them
up for these other work elements; otherwise, we should try
to create a new thread. */
if (idle_thread_count > 0)
pthread_cond_signal (&__gai_new_request_notification);
else if (nthreads < optim.gai_threads)
{
pthread_t thid;
pthread_attr_t attr;
/* Make sure the thread is created detached. */
pthread_attr_init (&attr);
pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
/* Now try to start a thread. If we fail, no big deal,
because we know that there is at least one thread (us)
that is working on lookup operations. */
if (pthread_create (&thid, &attr, handle_requests, NULL)
== 0)
++nthreads;
}
}
}
/* Release the mutex. */
pthread_mutex_unlock (&__gai_requests_mutex);
}
while (runp != NULL);
pthread_exit (NULL);
}
/* Free allocated resources. */
static void
__attribute__ ((unused))
free_res (void)
{
size_t row;
for (row = 0; row < pool_max_size; ++row)
free (pool[row]);
free (pool);
}
text_set_element (__libc_subfreeres, free_res);

100
resolv/gai_misc.h Normal file
View File

@ -0,0 +1,100 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _GAI_MISC_H
#define _GAI_MISC_H 1
#include <netdb.h>
#include <signal.h>
/* Used to synchronize. */
struct waitlist
{
struct waitlist *next;
pthread_cond_t *cond;
volatile int *counterp;
/* The next field is used in asynchronous `lio_listio' operations. */
struct sigevent *sigevp;
/* XXX See requestlist, it's used to work around the broken signal
handling in Linux. */
pid_t caller_pid;
};
/* Used to queue requests.. */
struct requestlist
{
int running;
struct requestlist *next;
/* Pointer to the actual data. */
struct gaicb *gaicbp;
/* List of waiting processes. */
struct waitlist *waiting;
};
/* To customize the implementation one can use the following struct.
This implementation follows the one in Irix. */
struct gaiinit
{
int gai_threads; /* Maximal number of threads. */
int gai_num; /* Number of expected simultanious requests. */
int gai_locks; /* Not used. */
int gai_usedba; /* Not used. */
int gai_debug; /* Not used. */
int gai_numusers; /* Not used. */
int gai_idle_time; /* Number of seconds before idle thread
terminates. */
int gai_reserved;
};
/* Lock for global I/O list of requests. */
extern pthread_mutex_t __gai_requests_mutex;
/* Enqueue request. */
extern struct requestlist *__gai_enqueue_request (struct gaicb *gaicbp)
internal_function;
/* Find request on wait list. */
extern struct requestlist *__gai_find_request (const struct gaicb *gaicbp)
internal_function;
/* Remove request from waitlist. */
extern int __gai_remove_request (struct gaicb *gaicbp)
internal_function;
/* Notify initiator of request and tell this everybody listening. */
extern void __gai_notify (struct requestlist *req)
internal_function;
/* Notify initiator of request. */
extern int __gai_notify_only (struct sigevent *sigev, pid_t caller_pid)
internal_function;
/* Send the signal. */
extern int __gai_sigqueue (int sig, const union sigval val, pid_t caller_pid)
internal_function;
#endif /* gai_misc.h */

100
resolv/gai_notify.c Normal file
View File

@ -0,0 +1,100 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <netdb.h>
#include <pthread.h>
#include <stdlib.h>
#include "gai_misc.h"
static void *
notify_func_wrapper (void *arg)
{
struct sigevent *sigev = arg;
sigev->sigev_notify_function (sigev->sigev_value);
return NULL;
}
int
internal_function
__gai_notify_only (struct sigevent *sigev, pid_t caller_pid)
{
int result = 0;
/* Send the signal to notify about finished processing of the request. */
if (sigev->sigev_notify == SIGEV_THREAD)
{
/* We have to start a thread. */
pthread_t tid;
pthread_attr_t attr, *pattr;
pattr = (pthread_attr_t *) sigev->sigev_notify_attributes;
if (pattr == NULL)
{
pthread_attr_init (&attr);
pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
pattr = &attr;
}
if (pthread_create (&tid, pattr, notify_func_wrapper, sigev) < 0)
result = -1;
}
else if (sigev->sigev_notify == SIGEV_SIGNAL)
/* We have to send a signal. */
if (__gai_sigqueue (sigev->sigev_signo, sigev->sigev_value, caller_pid)
< 0)
result = -1;
return result;
}
void
internal_function
__gai_notify (struct requestlist *req)
{
struct waitlist *waitlist;
/* Now also notify possibly waiting threads. */
waitlist = req->waiting;
while (waitlist != NULL)
{
struct waitlist *next = waitlist->next;
/* Decrement the counter. This is used in both cases. */
--*waitlist->counterp;
if (waitlist->sigevp == NULL)
pthread_cond_signal (waitlist->cond);
else
/* This is part of a asynchronous `getaddrinfo_a' operation. If
this request is the last one, send the signal. */
if (*waitlist->counterp == 0)
{
__gai_notify_only (waitlist->sigevp, waitlist->caller_pid);
/* This is tricky. See getaddrinfo_a.c for the reason why
this works. */
free ((void *) waitlist->counterp);
}
waitlist = next;
}
}

147
resolv/gai_suspend.c Normal file
View File

@ -0,0 +1,147 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <netdb.h>
#include <pthread.h>
#include <stdlib.h>
#include <sys/time.h>
#include "gai_misc.h"
int
gai_suspend (const struct gaicb *const list[], int ent,
const struct timespec *timeout)
{
struct waitlist waitlist[ent];
struct requestlist *requestlist[ent];
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
int cnt;
int dummy;
int none = 1;
int result;
/* Request the mutex. */
pthread_mutex_lock (&__gai_requests_mutex);
/* There is not yet a finished request. Signal the request that
we are working for it. */
for (cnt = 0; cnt < ent; ++cnt)
if (list[cnt] != NULL && list[cnt]->__return == EAI_INPROGRESS)
{
requestlist[cnt] = __gai_find_request (list[cnt]);
if (requestlist[cnt] != NULL)
{
waitlist[cnt].cond = &cond;
waitlist[cnt].next = requestlist[cnt]->waiting;
waitlist[cnt].counterp = &dummy;
waitlist[cnt].sigevp = NULL;
waitlist[cnt].caller_pid = 0; /* Not needed. */
requestlist[cnt]->waiting = &waitlist[cnt];
none = 0;
}
}
if (none)
{
if (cnt < ent)
/* There is an entry which is finished. */
result = 0;
else
result = EAI_ALLDONE;
}
else
{
/* There is no request done but some are still being worked on. */
int oldstate;
/* Since `pthread_cond_wait'/`pthread_cond_timedwait' are cancelation
points we must be careful. We added entries to the waiting lists
which we must remove. So defer cancelation for now. */
pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, &oldstate);
if (timeout == NULL)
result = pthread_cond_wait (&cond, &__gai_requests_mutex);
else
{
/* We have to convert the relative timeout value into an
absolute time value with pthread_cond_timedwait expects. */
struct timeval now;
struct timespec abstime;
__gettimeofday (&now, NULL);
abstime.tv_nsec = timeout->tv_nsec + now.tv_usec * 1000;
abstime.tv_sec = timeout->tv_sec + now.tv_sec;
if (abstime.tv_nsec >= 1000000000)
{
abstime.tv_nsec -= 1000000000;
abstime.tv_sec += 1;
}
result = pthread_cond_timedwait (&cond, &__gai_requests_mutex,
&abstime);
}
/* Now remove the entry in the waiting list for all requests
which didn't terminate. */
for (cnt = 0; cnt < ent; ++cnt)
if (list[cnt] != NULL && list[cnt]->__return == EAI_INPROGRESS
&& requestlist[cnt] != NULL)
{
struct waitlist **listp = &requestlist[cnt]->waiting;
/* There is the chance that we cannot find our entry anymore.
This could happen if the request terminated and restarted
again. */
while (*listp != NULL && *listp != &waitlist[cnt])
listp = &(*listp)->next;
if (*listp != NULL)
*listp = (*listp)->next;
}
/* Now it's time to restore the cancelation state. */
pthread_setcancelstate (oldstate, NULL);
/* Release the conditional variable. */
if (pthread_cond_destroy (&cond) != 0)
/* This must never happen. */
abort ();
if (result != 0)
{
/* An error occurred. Possibly it's EINTR. We have to translate
the timeout error report of `pthread_cond_timedwait' to the
form expected from `gai_suspend'. */
if (__builtin_expect (result, ETIMEDOUT) == ETIMEDOUT)
result = EAI_AGAIN;
else if (result == EINTR)
result = EAI_INTR;
else
result = EAI_SYSTEM;
}
}
/* Release the mutex. */
pthread_mutex_unlock (&__gai_requests_mutex);
return result;
}

168
resolv/getaddrinfo_a.c Normal file
View File

@ -0,0 +1,168 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2001.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <netdb.h>
#include <pthread.h>
#include <stdlib.h>
#include <unistd.h>
#include "gai_misc.h"
/* We need this special structure to handle asynchronous I/O. */
struct async_waitlist
{
int counter;
struct sigevent sigev;
struct waitlist list[0];
};
int
getaddrinfo_a (int mode, struct gaicb *list[], int ent, struct sigevent *sig)
{
struct sigevent defsigev;
struct requestlist *requests[ent];
int cnt;
volatile int total = 0;
int result = 0;
/* Check arguments. */
if (mode != GAI_WAIT && mode != GAI_NOWAIT)
{
__set_errno (EINVAL);
return EAI_SYSTEM;
}
if (sig == NULL)
{
defsigev.sigev_notify = SIGEV_NONE;
sig = &defsigev;
}
/* Request the mutex. */
pthread_mutex_lock (&__gai_requests_mutex);
/* Now we can enqueue all requests. Since we already acquired the
mutex the enqueue function need not do this. */
for (cnt = 0; cnt < ent; ++cnt)
if (list[cnt] != NULL)
{
requests[cnt] = __gai_enqueue_request (list[cnt]);
if (requests[cnt] != NULL)
/* Successfully enqueued. */
++total;
else
/* Signal that we've seen an error. `errno' and the error code
of the gaicb will tell more. */
result = EAI_SYSTEM;
}
else
requests[cnt] = NULL;
if (total == 0)
{
/* We don't have anything to do except signalling if we work
asynchronously. */
/* Release the mutex. We do this before raising a signal since the
signal handler might do a `siglongjmp' and then the mutex is
locked forever. */
pthread_mutex_unlock (&__gai_requests_mutex);
if (mode == GAI_NOWAIT)
__gai_notify_only (sig,
sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0);
return result;
}
else if (mode == GAI_WAIT)
{
pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
struct waitlist waitlist[ent];
int oldstate;
total = 0;
for (cnt = 0; cnt < ent; ++cnt)
if (requests[cnt] != NULL)
{
waitlist[cnt].cond = &cond;
waitlist[cnt].next = requests[cnt]->waiting;
waitlist[cnt].counterp = &total;
waitlist[cnt].sigevp = NULL;
waitlist[cnt].caller_pid = 0; /* Not needed. */
requests[cnt]->waiting = &waitlist[cnt];
++total;
}
/* Since `pthread_cond_wait'/`pthread_cond_timedwait' are cancelation
points we must be careful. We added entries to the waiting lists
which we must remove. So defer cancelation for now. */
pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, &oldstate);
while (total > 0)
pthread_cond_wait (&cond, &__gai_requests_mutex);
/* Now it's time to restore the cancelation state. */
pthread_setcancelstate (oldstate, NULL);
/* Release the conditional variable. */
if (pthread_cond_destroy (&cond) != 0)
/* This must never happen. */
abort ();
}
else
{
struct async_waitlist *waitlist;
waitlist = (struct async_waitlist *)
malloc (sizeof (struct async_waitlist)
+ (ent * sizeof (struct waitlist)));
if (waitlist == NULL)
result = EAI_AGAIN;
else
{
pid_t caller_pid = sig->sigev_notify == SIGEV_SIGNAL ? getpid () : 0;
total = 0;
for (cnt = 0; cnt < ent; ++cnt)
if (requests[cnt] != NULL)
{
waitlist->list[cnt].cond = NULL;
waitlist->list[cnt].next = requests[cnt]->waiting;
waitlist->list[cnt].counterp = &waitlist->counter;
waitlist->list[cnt].sigevp = &waitlist->sigev;
waitlist->list[cnt].caller_pid = caller_pid;
requests[cnt]->waiting = &waitlist->list[cnt];
++total;
}
waitlist->counter = total;
waitlist->sigev = *sig;
}
}
/* Release the mutex. */
pthread_mutex_unlock (&__gai_requests_mutex);
return result;
}

72
resolv/netdb.h
View File

@ -33,6 +33,11 @@
# include <rpc/netdb.h>
#endif
#ifdef __USE_GNU
# define __need_sigevent_t
# include <bits/siginfo.h>
#endif
#include <bits/netdb.h>
/* Absolute file name for network data base files. */
@ -412,23 +417,48 @@ struct addrinfo
struct addrinfo *ai_next; /* Pointer to next in list. */
};
# ifdef __USE_GNU
/* Structure used as control block for asynchronous lookup. */
struct gaicb
{
const char *ar_name; /* Name to look up. */
const char *ar_service; /* Service name. */
const struct addrinfo *ar_request; /* Additional request specification. */
struct addrinfo *ar_result; /* Pointer to result. */
/* The following are internal elements. */
int __return;
int __unused[5];
};
/* Lookup mode. */
# define GAI_WAIT 0
# define GAI_NOWAIT 1
# endif
/* Possible values for `ai_flags' field in `addrinfo' structure. */
# define AI_PASSIVE 0x0001 /* Socket address is intended for `bind'. */
# define AI_CANONNAME 0x0002 /* Request for canonical name. */
# define AI_NUMERICHOST 0x0004 /* Don't use name resolution. */
/* Error values for `getaddrinfo' function. */
# define EAI_BADFLAGS -1 /* Invalid value for `ai_flags' field. */
# define EAI_NONAME -2 /* NAME or SERVICE is unknown. */
# define EAI_AGAIN -3 /* Temporary failure in name resolution. */
# define EAI_FAIL -4 /* Non-recoverable failure in name res. */
# define EAI_NODATA -5 /* No address associated with NAME. */
# define EAI_FAMILY -6 /* `ai_family' not supported. */
# define EAI_SOCKTYPE -7 /* `ai_socktype' not supported. */
# define EAI_SERVICE -8 /* SERVICE not supported for `ai_socktype'. */
# define EAI_ADDRFAMILY -9 /* Address family for NAME not supported. */
# define EAI_MEMORY -10 /* Memory allocation failure. */
# define EAI_SYSTEM -11 /* System error returned in `errno'. */
# define EAI_BADFLAGS -1 /* Invalid value for `ai_flags' field. */
# define EAI_NONAME -2 /* NAME or SERVICE is unknown. */
# define EAI_AGAIN -3 /* Temporary failure in name resolution. */
# define EAI_FAIL -4 /* Non-recoverable failure in name res. */
# define EAI_NODATA -5 /* No address associated with NAME. */
# define EAI_FAMILY -6 /* `ai_family' not supported. */
# define EAI_SOCKTYPE -7 /* `ai_socktype' not supported. */
# define EAI_SERVICE -8 /* SERVICE not supported for `ai_socktype'. */
# define EAI_ADDRFAMILY -9 /* Address family for NAME not supported. */
# define EAI_MEMORY -10 /* Memory allocation failure. */
# define EAI_SYSTEM -11 /* System error returned in `errno'. */
# ifdef __USE_GNU
# define EAI_INPROGRESS -100 /* Processing request in progress. */
# define EAI_CANCELED -101 /* Request canceled. */
# define EAI_NOTCANCELED -102 /* Request not canceled. */
# define EAI_ALLDONE -103 /* All requests done. */
# define EAI_INTR -104 /* Interrupted by a signal. */
# endif
# define NI_MAXHOST 1025
# define NI_MAXSERV 32
@ -458,6 +488,26 @@ extern int getnameinfo (__const struct sockaddr *__restrict __sa,
socklen_t __hostlen, char *__restrict __serv,
socklen_t __servlen, unsigned int __flags) __THROW;
# ifdef __USE_GNU
/* Enqueue ENT requests from the LIST. If MODE is GAI_WAIT wait until all
requests are handled. If WAIT is GAI_NOWAIT return immediately after
queueing the requests and signal completion according to SIG. */
extern int getaddrinfo_a (int __mode, struct gaicb *__list[__restrict_arr],
int __ent, struct sigevent *__restrict __sig)
__THROW;
/* Suspend execution of the thread until at least one of the ENT requests
in LIST is handled. If TIMEOUT is not a null pointer it specifies the
longest time the function keeps waiting before returning with an error. */
extern int gai_suspend (__const struct gaicb *__const __list[], int __ent,
const struct timespec *__timeout) __THROW;
/* Get the error status of the request REQ. */
extern int gai_error (struct gaicb *__req) __THROW;
/* Cancel the requests associated with GAICBP. */
extern int gai_cancel (struct gaicb *__gaicbp) __THROW;
# endif /* GNU */
#endif /* POSIX */
__END_DECLS

6
rt/aio_misc.c
View File

@ -1,5 +1,5 @@
/* Handle general operations.
Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@ -115,7 +115,7 @@ get_elem (void)
pool = new_tab;
}
/* Allocat the new row. */
/* Allocate the new row. */
cnt = pool_size == 0 ? optim.aio_num : ENTRIES_PER_ROW;
new_row = (struct requestlist *) calloc (cnt,
sizeof (struct requestlist));
@ -414,7 +414,7 @@ __aio_enqueue_request (aiocb_union *aiocbp, int operation)
++nthreads;
else
{
/* Reset the running flat. The new request is not running. */
/* Reset the running flag. The new request is not running. */
running = newp->running = yes;
if (nthreads == 0)

14
rt/lio_listio.c
View File

@ -1,5 +1,5 @@
/* Enqueue and list of read or write requests.
Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
Copyright (C) 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
@ -70,8 +70,8 @@ lio_listio (mode, list, nent, sig)
if (list[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
{
list[cnt]->aio_sigevent.sigev_notify = SIGEV_NONE;
requests[cnt] = __aio_enqueue_request ((aiocb_union *) list[cnt],
list[cnt]->aio_lio_opcode);
requests[cnt] = __aio_enqueue_request ((aiocb_union *) list[cnt],
list[cnt]->aio_lio_opcode);
if (requests[cnt] != NULL)
/* Successfully enqueued. */
@ -81,6 +81,8 @@ lio_listio (mode, list, nent, sig)
of the aiocb will tell more. */
result = -1;
}
else
requests[cnt] = NULL;
if (total == 0)
{
@ -106,8 +108,7 @@ lio_listio (mode, list, nent, sig)
total = 0;
for (cnt = 0; cnt < nent; ++cnt)
if (list[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP
&& requests[cnt] != NULL)
if (requests[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
{
waitlist[cnt].cond = &cond;
waitlist[cnt].next = requests[cnt]->waiting;
@ -153,8 +154,7 @@ lio_listio (mode, list, nent, sig)
total = 0;
for (cnt = 0; cnt < nent; ++cnt)
if (list[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP
&& requests[cnt] != NULL)
if (requests[cnt] != NULL && list[cnt]->aio_lio_opcode != LIO_NOP)
{
waitlist->list[cnt].cond = NULL;
waitlist->list[cnt].next = requests[cnt]->waiting;

3
shlib-versions
View File

@ -116,3 +116,6 @@ hppa-.*-.* libBrokenLocale=1 GLIBC_2.2
# The real-time library from POSIX.1b.
mips.*-.*-linux.* librt=1 GLIBC_2.0 GLIBC_2.2
.*-.*-.* librt=1
# The asynchronous name lookup library.
.*-.*-.* libanl=1

20
sysdeps/generic/bits/siginfo.h
View File

@ -1,5 +1,5 @@
/* siginfo_t, sigevent and constants. Stub version.
Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc.
Copyright (C) 1997, 1998, 2000, 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -17,13 +17,15 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#if !defined _SIGNAL_H && !defined __need_siginfo_t
#if !defined _SIGNAL_H && !defined __need_siginfo_t \
&& !defined __need_sigevent_t
# error "Never include this file directly. Use <signal.h> instead"
#endif
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
#if (!defined __have_sigval_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t \
|| defined __need_sigevent_t))
# define __have_sigval_t 1
/* Type for data associated with a signal. */
typedef union sigval
@ -31,6 +33,11 @@ typedef union sigval
int sival_int;
void *sival_ptr;
} sigval_t;
#endif
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
typedef struct siginfo
{
@ -173,7 +180,8 @@ enum
#endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
#if defined _SIGNAL_H && !defined __have_sigevent_t
#if (defined _SIGNAL_H || defined __need_sigevent_t) \
&& !defined __have_sigevent_t
# define __have_sigevent_t 1
/* Structure to transport application-defined values with signals. */

36
sysdeps/generic/gai_sigqueue.c Normal file
View File

@ -0,0 +1,36 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <aio.h>
#include <errno.h>
#include <signal.h>
#include "gai_misc.h"
int
__gai_sigqueue (sig, val, caller_pid)
int sig;
const union sigval val;
pid_t caller_pid;
{
__set_errno (ENOSYS);
return -1;
}
stub_warning (__gai_sigqueue)
#include <stub-tag.h>

18
sysdeps/unix/sysv/linux/alpha/bits/siginfo.h
View File

@ -17,15 +17,17 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#if !defined _SIGNAL_H && !defined __need_siginfo_t
#if !defined _SIGNAL_H && !defined __need_siginfo_t \
&& !defined __need_sigevent_t
# error "Never include this file directly. Use <signal.h> instead"
#endif
#include <bits/wordsize.h>
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
#if (!defined __have_sigval_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t \
|| defined __need_sigevent_t))
# define __have_sigval_t 1
/* Type for data associated with a signal. */
typedef union sigval
@ -33,6 +35,11 @@ typedef union sigval
int sival_int;
void *sival_ptr;
} sigval_t;
#endif
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
# define __SI_MAX_SIZE 128
# if __WORDSIZE == 64
@ -246,7 +253,8 @@ enum
#endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
#if defined _SIGNAL_H && !defined __have_sigevent_t
#if (defined _SIGNAL_H || defined __need_sigevent_t) \
&& !defined __have_sigevent_t
# define __have_sigevent_t 1
/* Structure to transport application-defined values with signals. */

22
sysdeps/unix/sysv/linux/bits/siginfo.h
View File

@ -17,15 +17,17 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#if !defined _SIGNAL_H && !defined __need_siginfo_t
#if !defined _SIGNAL_H && !defined __need_siginfo_t \
&& !defined __need_sigevent_t
# error "Never include this file directly. Use <signal.h> instead"
#endif
#include <bits/wordsize.h>
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
#if (!defined __have_sigval_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t \
|| defined __need_sigevent_t))
# define __have_sigval_t 1
/* Type for data associated with a signal. */
typedef union sigval
@ -33,6 +35,11 @@ typedef union sigval
int sival_int;
void *sival_ptr;
} sigval_t;
#endif
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
# define __SI_MAX_SIZE 128
# if __WORDSIZE == 64
@ -120,7 +127,9 @@ typedef struct siginfo
signals. */
enum
{
SI_SIGIO = -5, /* Sent by queued SIGIO. */
SI_ASYNCNL = -6, /* Sent by asynch name lookup completion. */
# define SI_ASYNCNL SI_ASYNCNL
SI_SIGIO, /* Sent by queued SIGIO. */
# define SI_SIGIO SI_SIGIO
SI_ASYNCIO, /* Sent by AIO completion. */
# define SI_ASYNCIO SI_ASYNCIO
@ -246,7 +255,8 @@ enum
#endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
#if defined _SIGNAL_H && !defined __have_sigevent_t
#if (defined _SIGNAL_H || defined __need_sigevent_t) \
&& !defined __have_sigevent_t
# define __have_sigevent_t 1
/* Structure to transport application-defined values with signals. */

58
sysdeps/unix/sysv/linux/gai_sigqueue.c Normal file
View File

@ -0,0 +1,58 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <errno.h>
#include <netdb.h>
#include <signal.h>
#include <string.h>
#include <unistd.h>
#include <sysdep.h>
#include <sys/syscall.h>
#include "gai_misc.h"
#ifdef __NR_rt_sigqueueinfo
extern int __syscall_rt_sigqueueinfo (int, int, siginfo_t *__unbounded);
/* Return any pending signal or wait for one for the given time. */
int
__gai_sigqueue (sig, val, caller_pid)
int sig;
const union sigval val;
pid_t caller_pid;
{
siginfo_t info;
/* First, clear the siginfo_t structure, so that we don't pass our
stack content to other tasks. */
memset (&info, 0, sizeof (siginfo_t));
/* We must pass the information about the data in a siginfo_t value. */
info.si_signo = sig;
info.si_code = SI_ASYNCNL;
info.si_pid = caller_pid;
info.si_uid = getuid ();
info.si_value = val;
return INLINE_SYSCALL (rt_sigqueueinfo, 3, info.si_pid,
sig, __ptrvalue (&info));
}
#else
# include <sysdeps/generic/gai_sigqueue.c>
#endif

18
sysdeps/unix/sysv/linux/ia64/bits/siginfo.h
View File

@ -18,13 +18,15 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#if !defined _SIGNAL_H && !defined __need_siginfo_t
#if !defined _SIGNAL_H && !defined __need_siginfo_t \
&& !defined __need_sigevent_t
# error "Never include this file directly. Use <signal.h> instead"
#endif
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
#if (!defined __have_sigval_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t \
|| defined __need_sigval_t))
# define __have_sigval_t 1
/* Type for data associated with a signal. */
typedef union sigval
@ -32,6 +34,11 @@ typedef union sigval
int sival_int;
void *sival_ptr;
} sigval_t;
#endif
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
# define __SI_MAX_SIZE 128
# define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 4)
@ -276,7 +283,8 @@ enum
#endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
#if defined _SIGNAL_H && !defined __have_sigevent_t
#if (defined _SIGNAL_H || defined __need_sigevent_t) \
&& !defined __have_sigevent_t
# define __have_sigevent_t 1
/* Structure to transport application-defined values with signals. */

18
sysdeps/unix/sysv/linux/mips/bits/siginfo.h
View File

@ -17,13 +17,15 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#if !defined _SIGNAL_H && !defined __need_siginfo_t
#if !defined _SIGNAL_H && !defined __need_siginfo_t \
&& !defined __need_sigevent_t
# error "Never include this file directly. Use <signal.h> instead"
#endif
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
#if (!defined __have_sigval_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t \
|| defined __need_sigevent_t))
# define __have_sigval_t 1
/* Type for data associated with a signal. */
typedef union sigval
@ -31,6 +33,11 @@ typedef union sigval
int sival_int;
void *sival_ptr;
} sigval_t;
#endif
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
# define __SI_MAX_SIZE 128
# define __SI_PAD_SIZE ((__SI_MAX_SIZE / sizeof (int)) - 3)
@ -238,7 +245,8 @@ enum
#endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
#if defined _SIGNAL_H && !defined __have_sigevent_t
#if (defined _SIGNAL_H || defined __need_sigevent_t) \
&& !defined __have_sigevent_t
# define __have_sigevent_t 1
/* Structure to transport application-defined values with signals. */

18
sysdeps/unix/sysv/linux/sparc/bits/siginfo.h
View File

@ -17,15 +17,17 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#if !defined _SIGNAL_H && !defined __need_siginfo_t
#if !defined _SIGNAL_H && !defined __need_siginfo_t \
&& !defined __need_sigevent_t
# error "Never include this file directly. Use <signal.h> instead"
#endif
#include <bits/wordsize.h>
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
#if (!defined __have_sigval_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t \
|| defined __need_sigevent_t))
# define __have_sigval_t 1
/* Type for data associated with a signal. */
typedef union sigval
@ -33,6 +35,11 @@ typedef union sigval
int sival_int;
void *sival_ptr;
} sigval_t;
#endif
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
# define __SI_MAX_SIZE 128
# if __WORDSIZE == 64
@ -255,7 +262,8 @@ enum
#endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
#if defined _SIGNAL_H && !defined __have_sigevent_t
#if (defined _SIGNAL_H || defined __need_sigevent_t) \
&& !defined __have_sigevent_t
# define __have_sigevent_t 1
/* Structure to transport application-defined values with signals. */

18
sysdeps/unix/sysv/linux/sparc/sparc64/bits/siginfo.h
View File

@ -17,15 +17,17 @@
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#if !defined _SIGNAL_H && !defined __need_siginfo_t
#if !defined _SIGNAL_H && !defined __need_siginfo_t \
&& !defined __need_sigevent_t
# error "Never include this file directly. Use <signal.h> instead"
#endif
#include <bits/wordsize.h>
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
#if (!defined __have_sigval_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t \
|| defined __need_sigevent_t))
# define __have_sigval_t 1
/* Type for data associated with a signal. */
typedef union sigval
@ -33,6 +35,11 @@ typedef union sigval
int sival_int;
void *sival_ptr;
} sigval_t;
#endif
#if (!defined __have_siginfo_t \
&& (defined _SIGNAL_H || defined __need_siginfo_t))
# define __have_siginfo_t 1
# define __SI_MAX_SIZE 128
# if __WORDSIZE == 64
@ -246,7 +253,8 @@ enum
#endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
#if defined _SIGNAL_H && !defined __have_sigevent_t
#if (defined _SIGNAL_H || defined __need_sigevent_t) \
&& !defined __have_sigevent_t
# define __have_sigevent_t 1
/* Structure to transport application-defined values with signals. */